Four calorimetry trials are performed in identical calorimeters containing of water;…

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

Four calorimetry trials are performed in identical calorimeters containing 100  g100\;\text{g} of water; heat losses to the surroundings are negligible. Trial A: n=0.60  moln = 0.60\;\text{mol}, ΔH=−55  kJ mol−1\Delta H = -55\;\text{kJ mol}^{-1} Trial B: n=0.40  moln = 0.40\;\text{mol}, ΔH=+60  kJ mol−1\Delta H = +60\;\text{kJ mol}^{-1} Trial C: n=1.2  moln = 1.2\;\text{mol}, ΔH=−35  kJ mol−1\Delta H = -35\;\text{kJ mol}^{-1} Trial D: n=0.70  moln = 0.70\;\text{mol}, ΔH=+75  kJ mol−1\Delta H = +75\;\text{kJ mol}^{-1} Arrange the trials in order from the one that will cause the greatest temperature increase of the water to the one that will cause the greatest temperature decrease. (List the trial letters in order.)

Related theory

Browse the problem library